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Landmarks of the Face and Oral Cavity. Landmarks of the Face Nostril Nostril Openings to the nasal cavity Openings to the nasal cavity Lined w/ mucosa.

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Presentation on theme: "Landmarks of the Face and Oral Cavity. Landmarks of the Face Nostril Nostril Openings to the nasal cavity Openings to the nasal cavity Lined w/ mucosa."— Presentation transcript:

1 Landmarks of the Face and Oral Cavity

2 Landmarks of the Face Nostril Nostril Openings to the nasal cavity Openings to the nasal cavity Lined w/ mucosa Lined w/ mucosa Cilia Cilia Nasal hair Nasal hair Ala of the Nose Ala of the Nose Wing of the nose Wing of the nose outer edge of nostril outer edge of nostril

3 Landmarks of the Face Philtrum Philtrum V-shaped depression V-shaped depression Below the nose Below the nose Above the upper lip. Above the upper lip. Midline Midline Labial Comissures Labial Comissures corners of mouth corners of mouth Herpetic lesions Herpetic lesions often found here often found here Philtrum Labial Commissure Labio-mental groove

4 Lips Lips Lips Covered w/ Covered w/ skin on outside, skin on outside, mucosa inside mucosa inside Vermillion Zone Vermillion Zone reddish portion reddish portion Lip stick goes here Lip stick goes here Vermillion Boarder Vermillion Boarder Edge of the lips Edge of the lips Lip liner goes here Lip liner goes here Labial Tubercle Labial Tubercle Tip of the upper lip Protrusive tissue

5 Ears Lobule aka ‘lobe’ Lobule aka ‘lobe’ Fatty tissue that hangs down. Fatty tissue that hangs down. Helix Helix Outer edge of the ear Outer edge of the ear Tragus Tragus Cartilage Cartilage Covers ear canal opening Covers ear canal opening Ala-tragus plane Ala-tragus plane

6 Facial Grooves Naso-labial groove Naso-labial groove AKA sulcus AKA sulcus Groove from Groove from ala of the nose to ala of the nose to corners of mouth corners of mouth Labio-mental groove Labio-mental groove Groove between the Groove between the lip and chin lip and chin

7 Landmarks of the Oral Cavity Oral Vestibule aka Oral Vestibule aka Labial vestibule Labial vestibule Buccal vestibule Buccal vestibule Pocket inside mouth where cheek meets gingiva Pocket inside mouth where cheek meets gingiva Located on Located on Max. and Man. Max. and Man. ‘Chew’ is placed here ‘Chew’ is placed here Vestibular Fornix Vestibular Fornix Deepest part of the vestibule Deepest part of the vestibule

8 Oral mucosa Mucosa Mucosa Tissue that lines inner surface of lips & cheeks Tissue that lines inner surface of lips & cheeks Labial mucosa-lines the lips Labial mucosa-lines the lips Fordyce’s spots found in labial mucosa (small yellowish glands) Fordyce’s spots found in labial mucosa (small yellowish glands) Buccal mucosa-lines the cheeks Buccal mucosa-lines the cheeks Stensen’s duct is located on buccal mucosa Stensen’s duct is located on buccal mucosa Labial mucosa Labial mucosa Buccal mucosa Buccal mucosa

9 Landmarks of the Oral Cavity Gingiva AKA gums Firmly attached Dense, fibrous tissue withstands chewing pressure Pink Stippled

10 Frena / Frenum Frena Frena Frenum (singular) Frenum (singular) Raised lines of mucosal tissue Raised lines of mucosal tissue Extends from vestibule to labial & buccal mucosa Extends from vestibule to labial & buccal mucosa Attaches tongue to floor of the mouth Attaches tongue to floor of the mouth

11 Landmarks of the Oral Cavity Palate Palate AKA roof of the mouth AKA roof of the mouth 2 sections: Hard & Soft Palate 2 sections: Hard & Soft Palate Hard Palate-Anterior portion Hard Palate-Anterior portion Palatine rugae Palatine rugae Ridges on roof of mouth Ridges on roof of mouth Palatine raphe Palatine raphe Seam down center of palate Seam down center of palate Soft Palate-Posterior portion Soft Palate-Posterior portion Uvula is projection – extends off back of soft palate Uvula is projection – extends off back of soft palate

12 Exostosis Bony growth Bony growth Projects from a bony surface. Projects from a bony surface. Anywhere in the body Anywhere in the body Torus - singular Torus - singular Tori - plural Tori - plural Bony growth Bony growth Oral cavity Oral cavity Torus palantinus Torus palantinus Aka palatal tori

13 Mandibular Tori Torus Mandibularis (excess bone under tongue, AKA tori) Torus Mandibularis (excess bone under tongue, AKA tori) Uni-lateral Uni-lateral One side One side Bi-lateral Bi-lateral Both sides Both sides Buccal Buccal Towards the cheek Towards the cheek

14 Landmarks of the Oral Cavity Tongue Tongue Glossus muscle Glossus muscle Glossitis Glossitis Inflammation of the tongue Inflammation of the tongue Papilla (taste buds) on dorsal side Papilla (taste buds) on dorsal side Filiform papillae (hair like projections) Filiform papillae (hair like projections) Fungiform papillae (strawberry effect) Fungiform papillae (strawberry effect) Median sulcus divides tongue in half Median sulcus divides tongue in half

15 Salivary Glands Secrete saliva Secrete saliva aid in digestion process aid in digestion process Three Pairs of Salivary Glands Three Pairs of Salivary Glands Parotid Parotid Largest Largest Secretes saliva via the Stensen’s duct Secretes saliva via the Stensen’s duct Located by #2 & 15 Located by #2 & 15

16 Salivary Glands Sub-Mandibular Sub-Mandibular Size of walnut Size of walnut Secretes saliva via the Wharton’s duct Secretes saliva via the Wharton’s duct Located in area of #24 & 25 Located in area of #24 & 25 Sub-Lingual Sub-Lingual Smallest gland Smallest gland Secretes saliva from under the tongue Secretes saliva from under the tongue Many ducts Many ducts Like a ‘soaker’ hose Like a ‘soaker’ hose

17 Saliva 5 major functions of Saliva 5 major functions of Saliva Aids in digestion Aids in digestion Enzyme (salivary amylase) Enzyme (salivary amylase) Helps swallowing Helps swallowing Lubrication Lubrication Provides moisture to mouth (washes off teeth) Provides moisture to mouth (washes off teeth) Provides fluoride to teeth Provides fluoride to teeth Breaks down carbohydrates Breaks down carbohydrates

18 Conclusion Knowing and understanding landmarks of the oral cavity is very important. Knowing and understanding landmarks of the oral cavity is very important. Understanding word parts will make it easier to learn landmarks. Understanding word parts will make it easier to learn landmarks. Materials, techniques and instructions will be related to landmarks. Materials, techniques and instructions will be related to landmarks. Any questions?? Any questions??


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